crf150r mixture screw

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hey guys, does anyone have a picture of the standard mixture screw, i unscrewed mine the other day and when it came out i found on the floor a small steel washer and a 'o' ring seal and spring, can someone tell me or show me a pic of it assembled to see if that all belongs together, thanks for your help.

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I did this when I was putting in an aftermarket. However, I did not find the steel washer nor the Oring..... You can imagine the pain in the rear I created for myself. I lost the screw at least three times on my ice track, I was able to find that but not the stock spring. MacGyver'd it wiith a pen spring that got me trough the day.

I bought a new one that comes with all the pieces.

The order they are installed is: drop the spring on the screw, next the washer, lastly the Oring.

After reinstalling the complete set I suddenly found the washer on my floor, never did find the Oring......

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Does anyone remember if there are 2 o-rings for the white bros fuel screw? I took my fuel screw out and everything went on to the floor, and I see a smaller o-ring and a larger one that is up on the fuel screw higher which stayed on the fuel screw. So I would have the following combo Fuel Screw/o-ring/spring/washer/o-ring. Does this sound right? Should I not install the extra o-ring?